/**
 * Copyright 2000 self.com.au
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License. (http://www.apache.org/licenses/LICENSE-2.0)
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed 
 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for 
 * the specific language governing permissions and limitations under the License.
 *
 * <dhamma-message src="Atisha (11th century Tibetan Buddhist master)">
 * 	The greatest achievement is selflessness. The greatest worth is self-mastery.
 * 	The greatest quality is seeking to serve others. The greatest precept is continual awareness.
 * 	The greatest medicine is the emptiness of everything. The greatest action is not conforming with the worlds ways.
 * 	The greatest magic is transmuting the passions. The greatest generosity is non-attachment.
 * 	The greatest goodness is a peaceful mind. The greatest patience is humility.
 * 	The greatest effort is not concerned with results. The greatest meditation is a mind that lets go.
 * 	The greatest wisdom is seeing through appearances. 
 * </dhamma-message>
 *
 * @author Ashin Wimalajeewa
 */
package self.amigo.elem;

import java.awt.*;
import java.io.*;
import java.util.*;

import org.w3c.dom.*;

import self.gee.*;
import self.lang.*;
import self.xml.*;

public class FillableFeature implements IElementFeature, Serializable, Cloneable {
	
	/**
	 * If the internal state of this class ever changes in such a way that it can't be defaulted,
	 * then the {@link #serialVersionUID} should be incremented to ensure serialized instances cleanly fail.  
	 */
	private static final long serialVersionUID = 1;
	
  final static public String FILLCOLOR_PROP = "fillcolor";
  public String propertyName = FILLCOLOR_PROP;
  public Color fillColor = Color.white;

  public FillableFeature() {
  	// nothing to do
  }

  public FillableFeature( String propName ) {
    propertyName = propName;
  }

  public void set( FillableFeature src ) {
    if ( this != src )
      fillColor = src.fillColor;
  }

  public void       getProperties( Map store ) {
    throw new UnsupportedOperationException( "try using aggregate-whole composite property" );
  }

  public void       setProperties( Map data ) {
    throw new UnsupportedOperationException( "try using aggregate-whole composite property" );
  }

  // IPersistentElement support
  public void readFrom( Node self, HashMap idObjLookUp ) throws DOMException {
    String colorAsString = null;
    try {
      colorAsString = DomUtils.getElementAttribute( self, propertyName );
      if ( colorAsString.equals("NOFILL") )
        fillColor = null;
      else
        fillColor = new Color( Integer.parseInt(colorAsString) );
    } catch ( Exception err ) {
    	// nothing to do.
    }
  }

  public void writeTo( Document doc, Element self, HashMap objIdLookup ) throws DOMException {
    if ( fillColor != Color.white ) {
      String colorAsString = null;
      if ( fillColor == null )
        colorAsString = "NOFILL";
      else
        colorAsString = String.valueOf( fillColor.getRGB() );
      DomUtils.setElementAttribute( self, propertyName, StringUtils.toEmptyIfNull(colorAsString) );
    }
  }

  public Object clone() {
    try {
      return super.clone();
    } catch (CloneNotSupportedException e) {
      throw new RuntimeException( "err.cloning" );
    }
  }

  public boolean equals( Object other ) {
    if ( !(other instanceof FillableFeature) )
      return false;
    FillableFeature otherFeature = (FillableFeature) other;
    return ObjectUtils.isSame( fillColor, otherFeature.fillColor ) &&
           ObjectUtils.isSame( propertyName, otherFeature.propertyName );
  }
}
